Christensen, C. M. (2012). How Will You Measure Your Life? (1 st.). Harper Collins.
Chicago Style (17. basım) AtıfChristensen, Clayton M. How Will You Measure Your Life? 1 st. Harper Collins, 2012.
MLA (9th ed.) AtıfChristensen, Clayton M. How Will You Measure Your Life? 1 st. Harper Collins, 2012.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..